<html>
  <head>
    <title>lit-element code sample</title>
    <script type="module" src="./my-element.js"></script>
    <style>
      html { --themeColor1: rgb(67, 156, 144); }
      my-element {
        --myBackground: var(--themeColor1);
        --myColor: rgb(156, 67, 152);
      }
    </style>
  </head>
  <body>
    <my-element></my-element>
  </body>
</html>
